cairoMatrixInvert: cairoMatrixInvert
Description
Changes matrix to be the inverse of it's original value. Not
all transformation matrices have inverses; if the matrix
collapses points together (it is degenerate),
then it has no inverse and this function will fail.Usage
cairoMatrixInvert(matrix)
Details
Returns: If matrix has an inverse, modifies matrix to
be the inverse matrix and returns CAIRO_STATUS_SUCCESS. Otherwise,